Vista firewall config to our Outlook 2007 to log on to exchange server.

I have a new installation of Vista Ultimate with SP1, the problem i have is that when i launch Outlook 2007 it wont connect to our Exchange server. if i disable the windows firewall, Outlook will then bring up the exchange server login box, once logged in, i can re-enable the firewall and everything works ok. i have checked that outlook is ticked as an exception in the firewall rules. within the wf.msc, there is an entry for outlook inbound connections, i have added an outbound rule for outlook on any port as a quick test but it still gets blocked.
kind regards
Rick Penney
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Rick_PenneyConnect With a Mentor Author Commented:
i think the firewall may have been a red herring, i have created a new profile and the outlook client now logs onto the exchange server, even though i have redirected the email to the same local pst file in exactly the same way as the old profile and all the profile settings are identical to the old profile. Grrrr!
Make sure you have this update:

You can also consider turning off the windows firewall.  It's designed for when you are connected directly to the Internet with no router or hardware firewall in front of you.  I regularly turn it off as most computers are behind some kind of firewall anyway.
Rick_PenneyAuthor Commented:
That update wont install,  "not enough storage is available to process this command". All partitions however have at least 80GB free space.
i do indeed sit behind a firewall however i want to prevent intrusion on the LAN as we all use the same admin password.
Rick_PenneyAuthor Commented:
Ok,  the definitive solution is as follows:

1. Click Start, click Run, type regedit in the Open box, and then click OK.
2. Locate and then click the following subkey:
3. On the Edit menu, point to New, and then click DWORD Value.
4. Type DefConnectOpts, and then press ENTER.
5. Right-click DefConnectOpts, and then click Modify.
6. In the Value data box, type 0, and then click OK.
7. Exit Registry Editor.
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